1 files changed, 86 insertions, 0 deletions
diff --git a/kamon-system-metrics/src/main/scala/kamon/metrics/NonHeapMetrics.scala b/kamon-system-metrics/src/main/scala/kamon/metrics/NonHeapMetrics.scala
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+++ b/kamon-system-metrics/src/main/scala/kamon/metrics/NonHeapMetrics.scala
@@ -0,0 +1,86 @@
+/*
+ * =========================================================================================
+ * Copyright © 2013-2014 the kamon project <http://kamon.io/>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the
+ * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
+ * either express or implied. See the License for the specific language governing permissions
+ * and limitations under the License.
+ * =========================================================================================
+ */
+package kamon.metrics
+
+import java.lang.management.ManagementFactory
+
+import akka.actor.ActorSystem
+import com.typesafe.config.Config
+import kamon.metric._
+import kamon.metric.instrument.{ Gauge, Histogram }
+
+case class NonHeapMetrics(name: String) extends MetricGroupIdentity {
+  val category = NonHeapMetrics
+}
+
+object NonHeapMetrics extends MetricGroupCategory {
+  val name = "non-heap"
+
+  case object Used extends MetricIdentity { val name = "used" }
+  case object Max extends MetricIdentity { val name = "max" }
+  case object Committed extends MetricIdentity { val name = "committed" }
+
+  case class NonHeapMetricRecorder(used: Gauge, max: Gauge, committed: Gauge)
+      extends MetricGroupRecorder {
+
+    def collect(context: CollectionContext): MetricGroupSnapshot = {
+      NonHeapMetricSnapshot(used.collect(context), max.collect(context), committed.collect(context))
+    }
+
+    def cleanup: Unit = {}
+  }
+
+  case class NonHeapMetricSnapshot(used: Histogram.Snapshot, max: Histogram.Snapshot, committed: Histogram.Snapshot)
+      extends MetricGroupSnapshot {
+
+    type GroupSnapshotType = NonHeapMetricSnapshot
+
+    def merge(that: GroupSnapshotType, context: CollectionContext): GroupSnapshotType = {
+      NonHeapMetricSnapshot(used.merge(that.used, context), max.merge(that.max, context), committed.merge(that.committed, context))
+    }
+
+    lazy val metrics: Map[MetricIdentity, MetricSnapshot] = Map(
+      Used -> used,
+      Max -> max,
+      Committed -> committed)
+  }
+
+  val Factory = NonHeapMetricGroupFactory
+}
+
+case object NonHeapMetricGroupFactory extends MetricGroupFactory {
+
+  import NonHeapMetrics._
+  import kamon.system.SystemMetricsExtension._
+
+  def nonHeap = ManagementFactory.getMemoryMXBean.getNonHeapMemoryUsage
+
+  type GroupRecorder = NonHeapMetricRecorder
+
+  def create(config: Config, system: ActorSystem): GroupRecorder = {
+    val settings = config.getConfig("precision.jvm.non-heap")
+
+    val usedNonHeapConfig = settings.getConfig("used")
+    val maxNonHeapConfig = settings.getConfig("max")
+    val committedNonHeapConfig = settings.getConfig("committed")
+
+    new NonHeapMetricRecorder(
+      Gauge.fromConfig(usedNonHeapConfig, system, Scale.Mega)(() ⇒ toMB(nonHeap.getUsed)),
+      Gauge.fromConfig(maxNonHeapConfig, system, Scale.Mega)(() ⇒ toMB(nonHeap.getMax)),
+      Gauge.fromConfig(committedNonHeapConfig, system, Scale.Mega)(() ⇒ toMB(nonHeap.getCommitted)))
+  }
+}
+